Gneiss

Gneiss ( /ˈnaɪs/) is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks.

Read more about Gneiss:  Etymology, Composition, Types

Other articles related to "gneiss":

Types - Augen Gneiss
... Augen gneiss, from the German Augen, meaning "eyes", is a coarse-grained gneiss, interpreted as resulting from metamorphism of granite, which contains characteristic elliptic or ...
Types - Archean and Proterozoic Gneiss
... thrown there by the Neugrund impact Study of Gneiss Rock, Glenfinlas, the Trossachs, Scotland ...
South Cameroon Plateau - Geology
... Metamorphic rocks such as gneiss, mica, migmatites, and schists make up the South Cameroon Plateau's basement ... near the Dja River, where limestone and schists occur and along the Ntem River, where gneiss, granite, mica, migmatite, and schists occur ... The plateau's western portions are made up primarily of gneiss ...
Cadomian Orogeny - Basement
... The pre Cadomian basement rocks consist of Orosirian or Paleoproterozoic Icart Gneiss dated at close to 2,018 million years ago ... Near Tregor the gneiss in the Cadomian Perros-Guirec complex has been U-Pb dated to 1,790 million years ago ... Sark also has a gneiss basement ...
Leucogranite
... A study of sodium rich quartz-alkali feldspar—biotite gneiss granulite facies terrane in the Kerala Khondalite Belt near Manali in South India found that in situ leucosomes (light ... indicated localized melting or migmatization within the gneiss ... This was followed by intrusion of the gneiss by garnet-bearing leucogranitic melts both parallel and discordant to the foliation of the gneiss ...